Google: Nano Banana 2 (Gemini 3.1 Flash Image) vs OpenAI: GPT-6 Astra Pro: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Google: Nano Banana 2 (Gemini 3.1 Flash Image) (google/gemini-3.1-flash-image) vs OpenAI: GPT-6 Astra Pro (openai/gpt-6-astra-pro). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Google: Nano Banana 2 (Gemini 3.1 Flash Image) (google/gemini-3.1-flash-image) — Google AI Startup Credits ($350K) & 50% Cache Promo
Google DeepMind is currently subsidizing Gemini 4 Argon at 50% off standard rates ($2.00/1M input & $10.00/1M output instead of $4/$20) until November 30, 2026, alongside 95% off Context Caching ($0.10/1M) and up to $350,000 in Google for Startups Cloud/Vertex AI credits.
OpenAI: GPT-6 Astra Pro (openai/gpt-6-astra-pro) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 75% automatic prefix caching ($0.50/1M), 50% off 24-hour Batch API completions ($1/$5), and up to $150,000 in OpenAI/Azure Foundry credits via Microsoft for Startups Founders Hub (no VC funding required for initial tiers).
In Etuki October 2026 FinOps telemetry comparing Google: Nano Banana 2 (Gemini 3.1 Flash Image) (API ID: google/gemini-3.1-flash-image) vs OpenAI: GPT-6 Astra Pro (API ID: openai/gpt-6-astra-pro), Google: Nano Banana 2 (Gemini 3.1 Flash Image) offers lower standard input pricing at $0.5/1M tokens ($3/1M output), while Google: Nano Banana 2 (Gemini 3.1 Flash Image) leads in cached prefix economics at $0.25/1M tokens (50% discount). Google: Nano Banana 2 (Gemini 3.1 Flash Image) achieves a 0ms faster P90 time-to-first-token latency (280ms vs 280ms).
Auto-discovered via live global telemetry registry.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Google: Nano Banana 2 (Gemini 3.1 Flash Image) | OpenAI: GPT-6 Astra Pro | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | google/gemini-3.1-flash-image | openai/gpt-6-astra-pro | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $0.5 / $3 | $10 / $50 | Google: Nano Banana 2 (Gemini 3.1 Flash Image) |
| Cache Read Price (per 1M) | $0.25/1M (50% Off) | $5/1M (50% Off) | Google: Nano Banana 2 (Gemini 3.1 Flash Image) |
| Context Window / Max Output | 128K In / 32K Out | 1025K In / 125K Out | OpenAI: GPT-6 Astra Pro |
| P90 First-Token / Edge Latency | 280ms | 280ms | Google: Nano Banana 2 (Gemini 3.1 Flash Image) (-0ms) |
Google: Nano Banana 2 (Gemini 3.1 Flash Image)
API ID: google/gemini-3.1-flash-image • Live RegistryGemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combi
GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on c
Real-Time Stack Cost & Hidden-Fee Simulator (MAU / Token / Egress / GMV)
Calibrated with Reddit r/FinOps & r/devops telemetry: Includes Context Caching, Bandwidth Egress, and MoR Tax
🛰️Switch from Google: Nano Banana 2 (Gemini 3.1 Flash Image) to OpenAI: GPT-6 Astra Pro
GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on c Verified P90 latency of 280ms.